藍芽技術具有低價格、低功率、廣泛的無線電通訊系統的特性，以取代目前的"線"。其
有如Ad Hoc架構一般，以"piconet"為一最小傳輸單位。正當WLAN興起之時，百家爭鳴，
卻無統一標準來整合多樣化的系統，更無法在一簡單的裝置上嵌入整個架構，而藍芽便
具有這優勢。一些市場分析預測在公元兩千零五年之時，全球將會有一兆四億個藍芽裝
置運作，這也是我們將利用藍芽來取代有線系統的原因。但是，目前藍芽的規格書1.1版
並未對藍芽網路的架構定義完全，很多地方仍有爭議，所以根本無法架構網路機制。故
在本篇論文當中，我們將修改原有的協定，使藍芽網路能夠運作。進而為與外界網路能
夠聯繫，我們將架構一個支援IP封包傳輸、定址以及繞路的網路機制，並以模擬來剖析
不同的連結方式所達到的效能，及提升的方法。

The bluetooth technology encompasses a simple low-cost, low-power, global radio system for
integration into mobile devices to solve a simple problem: replace the cables used on mobile devices
with radio frequency waves. Such devices can form a quick ad-hoc secure "piconet" and
communicate among the connected devices. While WLANs had good ad-hoc networking capabilities,
there was no clear market standard among them. Moreover, there were no global standards that can
be integrated and implemented into small handheld devices. Some market analysts predict that there
will be some 1.4 billion Bluetooth devices in operation by the year 2005 [1]. That is the reason we
replace the cable from the "Network Adapter" with a low-cost RF link that we now call Bluetooth.
However, the current specification1.1 [2][3] does not describe the algorithms or mechanisms to create
a scatternet due to a variety of unsolved issues. Since the upper layers are not defined in Bluetooth, it is
not possible to implement scatternet in current specification. Hence in this research, we need make
some modifications to Bluetooth protocol in order to support the transmissions of packets in scatternet.
In this paper we describe a novel scatternet architecture, and present link performance results of the
proposed architecture.

1.Introduction
2.Physical Channel and link
3.Packet Types and Formats
3.1Access Code
3.2Packet Header
3.3Payload Format
3.4Common packet types
3.5SCO packets
3.6ACL packets
4.Connection Establishment
4.1STANDBY
4.2Page scan
4.3Page
4.4Slave response
4.5Master response
4.6Inquiry scan
4.7Inquiry
4.8Inquiry response
4.9CONNECTION state
5.Different Slave Modes
5.1Active mode
5.2Sniff mode
5.3Hold mode
5.4Park mode
6.Routing in Scatternet
6.1Payload Extension Header for scatternet
6.2Intra-piconet and inter-piconet unicast and broadcast
7.Addressing Mode and Cellular Structure for Supporting Handoffs and IP Packets Transmissions with Other Networks
7.1Bluetooth IPv6 address format
7.2Cellular Structure
7.3Soft Handoff
7.4Role and Duty of CM
7.5Role and Duty of Master and Slaves
8.Performance analysis and simulation results
8.1The simulation environment
8.2Simulation result and discussion
9.Conclusions and Future Works
References

[1] Bluetooth 2000: To Enable the Star Trek Generation, Cahners In-Stat Group,June 2000.
[2] Bluetooth Special Interest Group. http://www.bluetooth.com/
[3] Specification of the Bluetooth System core 1.1
[4] Pravin Bhagwat, IBM, Thomas J, Watson Research Center, "A Routing Vector Method (RVM) for Routing in Bluetooth Scatternets", Mobile Multimedia Communication 1999, IEEE International workshop.
[5] William Su, Sung-Ju Lee, and Mario Gerla, "Mobility prediction and routing in ad hoc wireless networks", International Journal of Network Management, 2001.
[6] Jie Wu and Hailan Li, "On Calculating Connected Dominating Set for Efficient Routing in Ad Hoc Wireless Networks", ACM 1999.
[7] Suresh Singh and Mike Woo, C.S. Raghavendra, "Power-Aware Routing in Mobile Ad Hoc Networks", ACM 1998.
[8] Robert Castaneda and Samir R. Das, "Query Localization Techniques for On-demand Routing Protocol in Ad Hoc Networks", ACM 1999.
[9] Yu-Liang Chang and Ching-Chi Hsu, "Routing in wireless/mobile ad-hoc networks via dynamic group construction", Mobile Networks and Applications, 2000.
[10] Chales E. Perkins, Sun Microsystems, "Mobile IP", IEEE Communication Magazine, May 1997.
[11] Girish Chiruvolu, Anshul Agrawal and Marc Vandenhoute, "Mobility and QoS support for IPv6-based Real-time Wireless Internet Traffic", Communication 1999, IEEE International Conference on.
[12] Han-Chieh Chao, Yen-Ming Chu and Mu-Tai Lin, "THE IMPLICATION OF THE NEXT-GENERATION WIRELESS NETWORK DESIGN: CELLULAR MOBILE IPv6", IEEE Transaction on Consumer Electronics, June 2000.
[13] Simon Baatz, Matthias Frank, Rolf Gopffarth, Dmitri Kassakine, Peter Martini, Markus Schetelig, Asko Vilavaara, "Handoff Support for Mobility with IP over Bluetooth", IEEE 2000.
[14] Charles E. Perkins and Kuang-Yeh Wang, "Optimized Smooth Handoffs in Mobile IP", IEEE 1999.